REINFORCEMENT IN THE FOOTINGS, ONE WAY, TWO WAYS (SQUARE) AND RECTANGULAR

Tensile reinforcement:-- The total tensile reinforcement at any section shall provide a moment of resistance at least equal to the bending moment on the section so calculated in case .Total tensile reinforcement shall be distributed across the corresponding resisting section as detailed under  (a) In one way reinforced footings the Reinforcement shall be distributed uniformly across the full width of the footing (b) In two way reinforced square footing,the reinforcement extending in each direction shall be distributed uniformly across the full width of the footing.(c) In two way reinforced rectangular footing, the reinforcement in the long direction shall be distributed uniformly across the full width of the footing.For reinforcement in the short direction , a central band equal to the width of the footing shall be marked along the length of the footing and portion of the reinforcement determined in accordance with the equation given below shall be uniformly distributed across the central band ie reinforcement in central band width divided by the total reinforcement in short direction is equal to 2 divided by B plus 1 where B is the ratio of the long side to short side of the footing.The remainder of the reinforcement shall be uniformly distributed in the outer portions of the footing.